Contact net wire barrow

The utility model relates to an overhead line system wire barrow which comprises a barrow body and an unwinding assembly, the unwinding assembly comprises an unwinding roller and a driving part, the rotating axis of the unwinding roller is rotationally connected with the barrow body in the vertical direction, the driving part is installed on the barrow body, and the output end of the driving part is connected with the unwinding roller and used for driving the unwinding roller to rotate; due to the limitation of the width of the track and the limitation of the width of the vehicle body, a traditional transverse placement mode of the unwinding roller is changed, more contact networks can be wound through the vertically-arranged unwinding roller and the control over the height of the unwinding roller, the pay-off amount of single-time operation of the unwinding roller is greatly increased, the single-time operation requirement can be met only by arranging one unwinding roller, and the pay-off efficiency is impro